AHC: White Dawn

With a POD after 1905, have a war in the 20th century that takes place between a monarchist Russia as the aggressor and a coalition of all other major European powers. Do whatever you want with Japan/China/USA.
 
Balkan war escalates whit AH joining first then Russia then Italy then France later Germany when Russia threaten Paris and Rome Eangland come in.
 
The Great Game still ongoing for whatever reason, and Britain supports Germany and AH. After the fuse is lit my some dumb thing in the Balkans, Russia decides to intervene (maybe a kind of reverse Franz Ferdinand scenario). Things spiral out of control and Russia declares war on Austria and Germany. France has only a defensive pact with Russia, and while they are inclined to join, they opt for neutrality when Britain also joins Germany/AH. Russia is properly trashed, and in the latter stages of the war, an extremist ("Fascist") government takes power. The Czar and his family flee to France, and France also joins the war to reinstate them (but really just to have a seat at the peace conference).
 
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